Who's to judge that anything is wrong? Murder, theft etc.? In the end, we must organize a society. If you don't like thinking of society's judgment -- made through whatever institutions it creates -- as universal moral rulings, think of them as organizational rules. If you kill someone under certain conditions, society puts you in jail, and the word "wrong" is used for those things society deems jail-worthy (and probably beyond that, too). In this case, society does decide what opinions are right or wrong in the correctness sense, only what ideas can be detrimental to its own survival to a degree that justifies enforcement. Who decides where is that line? The same institutions that decide the penalty for reckless driving.
Any freedom is some compromise. If a society has two people or more, then either one person is allowed to, say, enslave the other, in which case the society isn't totally free, or not, in which case the society also isn't totally free. So there is no such thing as absolute freedom, and whenever we say freedom we actually mean some point on a spectrum. We could argue over what that reasonable point is, but absolute freedom is something that can't exist. So instead of speaking in absolutes, let's acknowledge that we're arguing over a favorite compromise.
It's not a moral principle. It's an explanation of where we find ourselves. This doesn't mean we shouldn't keep striving for a just society, but we don't live in a just society.
Or maybe we can develop really advance VR so that make possible for everyone to live in their own ideal socity.
If everybody simply stuck to treating others how they would want to be treated, we'd live in a much better world already, even if it wasn't "perfect", and even if there were disagreements, and it all still always subject to constant learning and reflection.
Our main problems don't stem from out confusion about what we think is right (and by "we" I mean each of us as the individuals that actually exist, not as a collective abstraction), but from wanting what we think is right for ourselves, while having double standards for others, and rationalizations for those.
 I know there are such policemen, I extrapolate to expect there are likeminded judges too.
How many people would think that it was okay for the government to steal private property in the border states under the concept of “imminent domain” if it meant that the wall could be built?
Yes imminent domain is theft. The government rarely pays the fair market value.
Sure. Slavery was moral, or if I disagree with it, I'll accept it as an organisational rule instead. Ditto apartheid, ditto the way many mid-eastern countries treat women.
> So when a particular society legislates a law, you don't necessarily have to take it as if that particular society has settled a universal moral question
Point taken, but laws can be plain immoral, even evil. Laws should be as moral as possible. Laws without a moral backing would seem to be meaningless.
But lets put that aside, let's take your intended point that laws are an attempt to formalise morality, and lets also assume morality is what we'd call moral (not oppressing women/minorities/certain religions/etc). You say
> but you cannot equivocate on a law
but you damn well can! In the UK the definition of theft involves intent. From wiki "[...] if he dishonestly appropriates property belonging to another with the intention of permanently depriving the other of it"
It's all about intent. It's the crux of it IIRC (and I did a short course in law). A lot of law is about intent. I hit a person in the face. Deliberate? I get spanked. Genuine unavoidable accident? I get let off. Intent is central. It is very equivocable.
In our case, which of 8chan's members are in it for pure lulz, and which because they really want to start a race war. Hard to tell intent.
Still sounds like the world is a cleaner place without them lot.
That's not equivocation, it's what I called nuance, and mentioned the judiciary's role in managing it. With ethics you can say, "this is a hard question," and leave it at that; with the law, you must decide. The judge or jury must ultimately decide whether to punish the possible thief or not, and if so, how -- say, by making a decision on intent, perhaps taking degrees into account. Either society decides to shut 8chan down or not; "it's complicated" isn't an option (I mean, it may well be, but a decision must be reached). So whatever ethics is at play, and however complicated it is, a decision on action must be and is made.
And BTW, not every offense must have criminal intent. Traffic violations, for example, do not (in the jurisdictions I know). Murder, as it is defined in many jurisdictions, requires intent, but even without it killing is often a very serious offense (e.g. you can kill through an intent to endanger, and you can kill through negligence, and you'll end up in prison for both).
I think you mean that slavery was legal. Most people would hold that it was never moral. Some people hold these same beliefs now about some of our current behaviors toward other animals: they're legal but not moral.
This statement is not as self-evident as you seem to believe. Philosophers and ethicists have been debating it for millennia.
>Philosophers and ethicists have been debating it for millennia
Thats even more strengthen my position that morality is subjective.
So OK, I'll do the same: I disagree that morality is subjective.
Edit: so if I disagree that the world is round, that shows that it's flat?
>so if I disagree that the world is round, that shows that it's flat?
No, it just show that you disagree that the world is round